Shiro Kawai scripsit:

> Would it be better to note the fact?

I've added this text:

This procedure is intended only to extend default comparators into
territory that would otherwise be undefined, not to override their
existing behavior.
In general, the ordering of calls to <code>comparator-register-default!</code>
should be irrelevant.  However, implementations that support inheritance
of record types may wish to ensure that default comparators always check
subtypes before supertypes.

--
John Cowan          http://www.ccil.org/~cowan        xxxxxx@ccil.org
Here lies the Christian, judge, and poet Peter,
Who broke the laws of God and man and metre.